Trying to capture form (post) activity

[twhiting9275]

So, a pretty basic hook here, trying to capture form (or post) activity.

Example:
Login failure

<?php
add_hook('ClientAreaPage', 1, function($vars) {

print_r($_POST);
die();  
});

The ultimate goal is to get the output on those fields, put them into a smarty variable (to deal with later), and then move from there.

The problem? Even though this code should print out the post field, and does in every other php form I've worked with (pretty simple really), it fails here, just simply spits out

Array ( ) 

No information on the array (I know it should be an array), what it is, or the information in the array, just

 Array ( ) 

This is likely something incredibly stupid that I'm missing, one of those 'you need a second pair of eyes' things, but what the ************ am I missing here?

[twhiting9275]

nvm, moving on... Can't do what I want that way anyways, bah.